Summary Info on Current Status for 802.11 Devicescape Stack
Devicescape Inc. Summary
- Wi-Fi software specialist Instant80211 has renamed itself Devicescape Software Inc. in Feb. 2005.
- Devicescape mainly sells Universal Wireless Platform (UWP) product which includes
- Linux kernel
- Devicescape wireless subsystem (a device-independent IEEE 802.11 software core)
- An Eclipse based integrated development environment (Devicescape Studio)& command-based development environment.
- Wireless-specific tools for the 802.11 subsystem
- GNU toolchain
- Build scripts and makefiles
- UWP supports Atheros (AR5213), Broadcom (BCM4306/4309/4320), Conexant radios.
Architecture Diagram for Devicescape Inc. UWP
Summary on Linux 802.11 stack situation
- There exists a wireless-2.6 tree on http://kernel.org maintained by John Linville. Upcoming in-kernel stack/drivers will be pushed upwards (to Linus) via this tree.
- There are two candidate stacks on the tree:
- softmac stack: based on the current ieee80211 stack in the kernel with improvements+recent patches.
- devicescape (a.k.a dscape, or d80211) stack: is another stack written and recently GPL'ed by Devicescape Inc.
- Although devicescape has some advantages in functionality (like full WPA support), softmac is likely to be merged into upstream due to some issues in stability, compatibility etc.
- Both stacks seem to stay under concurrent development (at least for a while)
Functions Supported at d80211 stack
- Obvious Functions : various send/receive and their lower/higer layer interfaces etc.
- BSS join/scan
- 802.11e/WMM parameter set handling, and packet→queue classification
- Encryption (wep, wpa, tkip/aes)
- IBSS create/find/join/merge
- Basic stat/info dump to /proc
- A simple rate control algorithm
- Interface for HostAPd
Devicescape stack is accessible from http://kernel.org/git as a git project named 'wireless-dev'.
Last modified 17 years ago Last modified on Apr 16, 2006, 3:40:24 AM
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